نتایج جستجو برای: zwitterion

تعداد نتایج: 484  

Journal: :Nature communications 2015
B Kollbe Ahn Saurabh Das Roscoe Linstadt Yair Kaufman Nadine R Martinez-Rodriguez Razieh Mirshafian Ellina Kesselman Yeshayahu Talmon Bruce H Lipshutz Jacob N Israelachvili J Herbert Waite

Despite the recent progress in and demand for wet adhesives, practical underwater adhesion remains limited or non-existent for diverse applications. Translation of mussel-inspired wet adhesion typically entails catechol functionalization of polymers and/or polyelectrolytes, and solution processing of many complex components and steps that require optimization and stabilization. Here we reduced ...

Journal: :The Journal of chemical physics 2014
Evgeniya Levy Silvina Cerveny Irina Ermolina Alexander Puzenko Yuri Feldman

In this paper, the fourth one of our series on the dielectric spectrum symmetrical broadening of water, we consider amino acid (AA) aqueous solutions. The developed 3D-trajectory is applied here to the variety of zwitterion amino acids representing both the hydrophobic and hydrophilic nature of their residues. The dipole moment of amino acids due to their zwitterion determines their interaction...

2010
Chin Sing Yeap Madhukar Hemamalini Hoong-Kun Fun

The title Schiff base compound, C(13)H(11)NO(5)S·3H(2)O, formed from sulfanilic acid and 2,4-dihydroxy-benzaldehyde, crystallized out as a zwitterion with the N atom protonated. The asymmetric unit consists of one 4-[(2,4-dihydroxy-benzyl-idene)ammonio]benzene-sulfonate and three water mol-ecules. The zwitterion exists in an E configuration with respect to the central C=N double bond. The two b...

Journal: :Journal of the American Chemical Society 2007
Robert C Dunbar Nick C Polfer Jos Oomens

Although solution-phase amino acids normally exist as zwitterions, this is not the case under gas-phase conditions, where the canonical structure is favored. Complexation to a metal ion can increase the relative zwitterion stability, but even then, the zwitterion (salt bridge, SB) form is not the most stable form of such singly charged complexes except for basic amino acids. Computation suggest...

Journal: :Acta Crystallographica Section E Structure Reports Online 2003

Journal: :Journal of the American Society for Mass Spectrometry 2005

Journal: :Journal of the American Chemical Society 1997

Journal: :Nanoscale 2015
Kuan Sun Jingjing Chang Furkan Halis Isikgor Pengcheng Li Jianyong Ouyang

Double interlayers consisting of a zwitterionic small molecule layer and a LiF layer were introduced between the electron transport layer and the cathode of perovskite solar cells. The double interlayers improve the photovoltaic efficiency to 13.2%, which is higher than that of control devices without the double interlayer (9.2%) or with LiF (11.0%) or rhodamine 101 zwitterion (12.1%) alone.

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